I am not taking part in the debate.*
But it's very odd to read discussions about tenure having been part of that system, and having left it.
Honestly, I think one of the biggest reasons why faculty get so wigged out about tenure is the horrific academic employment market. Because tenure means job security, and lack of tenure means (to many of the people involved, it seems, anyway) the increased possibility of getting fired.** And given how fricking impossible it is to get an academic job in the first place, and how hard it is to get to a second one in the second place--especially if, god forbid, you've settled in wherever you got hired, because getting another job will almost certainly mean uprooting and moving somewhere else, which, if you've actually put down roots and created a life for yourself, sucks royally--getting fired takes on a WHOLE DIFFERENT MEANING in academia than in other industries.
I mean, if you're a lawyer, and you get laid off, that sucks royally, too (especially--say it with me--IN THIS ECONOMY). But it is much less likely to mean that you have to uproot your entire household and move halfway across the country if you want to continue in the field for which you trained. You might move from one big firm to another, you might go from a big firm to a smaller firm, you might end up in government work, you might even hang up your own shingle. But the rest of your life will otherwise likely continue much as it always did. (That's a little less likely these days, but still, pretty likely.)
The actual fallout of getting fired as an academic, given the academic market, is largely independent of how you get fired--whether you don't get tenure, you get tenure but your institution declares financial exigency and cuts your department, or you're at an institution that never had tenure to begin with that doesn't renew your contract, the suckiness of getting fired is going to be pretty much a constant.
But the tenure system just means that it's a whole lot less likely that you will be fired.
Given the consequences of getting laid off as an academic, I understand why everyone likes that system so much. But it seems to me that the real problem underlying this element of tenure is not that eliminating tenure means that faculty are more likely to be fired. It's that if faculty are fired, there are so few other things they can (easily) do that involve what they're trained for.
You can also see this, I think, in the kinds of institutions less
likely to have tenure. Community colleges are more likely not to offer
tenure than four-year colleges and universities. Community colleges also tend to
offer more professional/vocational kinds of degrees (e.g. nursing, business,
graphic design, journalism). Most of the people who teach such
subjects--or perhaps the preferred candidates to teach such
subjects--are those who have significant experience in the professional
world. Such people don't necessarily care about tenure because they can
get jobs in their particular industry (many probably still have those
jobs while teaching). For such faculty, getting fired would doubtless still suck, but it would be less likely to cause the same kind of upheaval in their lives as for the average academic at a four-year college or university.
And this, to me, points to the way the academic job market intersects with support for tenure. Which is an economic problem, and a problem facilitated by the proliferation of grad departments to supply TAs so that universities don't have to hire as many professors actually to teach. It's not about academic freedom, it's about supply and demand. And I don't think that ensuring that the few people who do get academic jobs can't get fired from them should have so much to do with the fact that so few people can get such jobs in the first place. Let's face it: would losing your job because your institution doesn't have tenure really be so unthinkable if you knew that, with a reasonable amount of effort, you could get another job doing the same thing in the same town?
I know that people are going to bring up academic freedom in response to this, the corporatization of the university and so on, which I haven't addressed here. I'm just not convinced that academic work is so very very different from every other kind of professional industry out there that it requires the protection of tenure. I'm not convinced that having a tenure system really prevents abusive employment practices. Honestly, I'm not convinced the tenure system does much besides reward people for subordinating every element of their life to their work.*** And I'm also not convinced that discussions of tenure and the need for tenure can be separated from the terrible economics of the academic job market, even though they're really not the same thing at all.
*I don't really want to link; if you read around the academic blogosphere, or the corners I frequent at least, you probably know what I'm talking about. If you don't, you probably don't, but you might consider that a good thing....
**I'm still not convinced that abandoning tenure would actually lead to everyone getting fired all the time, but eh, I can't exactly prove that.
***This is NOT meant as any kind of insult to the many of my dear, dear friends who are tenured or on the tenure-track and accomplishing great things. I just think you'd have all done those things without tenure.